API STD 19C
Measurement of and Specifications for Proppants Used in Hydraulic Fracturing and Gravel-packing Operations
|Publication Date:||1 August 2018|
This document provides specifications and standard testing procedures for evaluating proppants used in hydraulic fracturing and gravel-packing operations.
The objective of this document is to provide specifications and a consistent methodology for testing performed on hydraulic fracturing and/or gravel-packing proppants. Methodologies and specifications (where applicable) are provided for:
- sieve analysis and median diameter determination;
- sphericity and roundness;
- acid solubility;
- loose pack bulk density, apparent density, and absolute density;
- crush resistance;
- loss on ignition.
Proppant size designation is as per industry standard. It is based on the maximum and minimum size determination by sieve analysis and ASTM 1 sieve number (and not as per standard opening expressed in micrometers).
Proppants in this document are sand, ceramic media, resin-coated proppants, gravel-packing media, and other similarly used materials for hydraulic fracturing and gravel-packing operations.
1 ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.